Combined heater and muffler for automobiles



Feb. 4, 1930. J. w. KELCH ET AL 1,745,492

COMBINED HEATER AND MUFFLER FOR AUTOMOBILES Filed Dec. 51, 1925' 2 sheets-sheet 1 A 17 l n 50 3! /5 B /6 /0 if 5 a h IN X Z4 Z5 4 7 Z X GEE coax 135105131313 53 BEIGE! 5111 we ufoz b /zzai W/(e/c/i James J 61/1215 4, 1930- I J. w. KELCH ET AL 1,745,492

COMBINED HEATER AND MUFFLER FOR AUTOIOBILES Filed Dec. 31. 1925 2 Sheets-Sheet 2 Patented Feb, 4, 1930- -nN rao sfr ras PATENT JAMES W. KELCE AND JAMES J, S'U NDAY, 0F DETROIT, MICHIGAN, ASSIGNORS, E.

DIRECT AND MESNE ASSIGNMENTS, T0 KELCE VENTILATING HEATER QOMPANY, A

CQEIPOBATION OF MICHIGAN COMBINED HEATER AND MUFFLER FOR AUTOMGBILES Application filed December 31, 1925. Serial No. 78,635.

lhis invention relates generally to heaters for automobiles and the like and consists of certain novel features of construction, combinationsand arrangements of parts as will.

be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a fragmentary side elevation of a vehicle body with a heater embodying our invention applied thereto.

Figure 2 is an enlarged vertical longitudinal sectional view through the heater.

Figure 3 is an end elevation of the core.

Figure 4 is a view similar to Figure 2 showing a slight modification. I

Figure 5 is a longitudinally vertical sectional View through a slightly modified form of heater.

Figure 6 is a longitudinally vertical sect'ional view through another modified form of construction.

Figure 7 is a view similar to Figure 6 but showing another modified form.

Referring nowto the-drawings,the numeral 1 designates a heater for automobiles and the like having a core 2 and an outer shell or casing 3. As shown, this core preferably comprises a plurality of straight tubes 4 and their supporting plates 5 and 6 respectively, while the shell 3 preferably comprises the tubular body 7 and the funnel-shaped headers 8 and 9 respectively. To provide an efficient construction, the plates'5 and 6 of the core are preferably provided with marginal flanges 10 and 11 respectively which fit snugly within the tubular body at the opposite ends thereof, while the flared portions of the headers 8 and 8 are preferably provided with annualr flanges 12-and 13 respectively which fits snugly within the marginal flanges 10 and 11.

In order that the exhaust gases from the engine of-the vehicle may be used as the heating. medium, the forward header 8 is con nected to the usual exhaust conduit 14 of the vehicle. Any suitable means may be employed for conveying air from the atmosphere to the tubular bod 7 and from the shell to the body 15 of the ve 'cle. As shown, a supply pipe 16 extends forwardly from the tubular body 7 adjacent to the header 8 and terminates in a flared portion 17, preferably immediately in rear of the usual fan 18 of theengine, while a pipe 19 extends rearwardly from the tubular body 7 adjacent to the header 9 and connects into a suitable air register 20 located the vehicle body.

As shown in Figures 2 and 3 of the drawings, the tubes 4 are preferably arranged close together to provide in efl'ect a common passage for the gases through the shell and are provided at their forward ends in advance of the plate 5 with flared portions 22 whichare welded together. Thus, the tubes 4 are in substantial alignment with the exhaust inlet 23 and the integrated portions 22 of the tubes are constructed and arranged in such a way as to form a header which will distribute uni- V preferably in the floor 21 of welding the headers 8 and 9 to the flanges 10 and 11; fifth, slipping the tubular body 7 upon the flanges 10 and 11; and finally, welding one end only, preferably the forward end of the tubular body 7 to the flange 10 .and header 8. Thus a sliding joint is provided at the opposite end of the heater between the tubular body 7 and the flange 11 totake care of expansion and contraction of the core. Inasrnuch as the tubes 4 are welded togetherv and are welded to the plates 5 and 6 it will also be apparent that the rigid joints so provided will reinforce the walls of both the shell and tubes and will prevent the parts from vibrating or rattling.

In Figure 4 we have shown a slight modification in which the tubular body 7 is secured to the flanges 10 and '11 by means of-tongues 24. As shown, the tubular body 7 is provided at its opposite ends with elongated es 24. In the slots 25 that receive the tongu process of construction, the'tubular body 7 1s sleeved upon the flanges 10 and 11 with 5 the slots 25 in position to receive the tongues 24. These tongues are then bent back over the inner endsof the slots 25 to secure the parts together. Thus the tubular body 7 has a sliding engagement with both flanges 10 and 11 to take care of expansion and contraction of the core.

In Figure 5 we have shown another modification in which a heater 'and mufile'r are combined in one unit. As shown, a perforatedcone-shaped baffle 30 has a marginal flange 31- secured to the flared portion of the forward header 8 and projects rearwardly toward the center tube of the core, while coaxiallyarranged apertured baflles 32 and 33 respectively have marginal flanges 34 and 35 secured to the flared portion of the rear header 9 and preferably project rearwardly towardthe exhaust outlet 36. In use, the

exhaust gases entering the header 8 will pass 5 through the perforations in the baffle in shoulders 41 which have apertures 42 therein through which the gases may flow directly into the tubes 4.

In Figure 7 we have shown still another modification in which the forward baflle is provided with apertures 51 to permit the 45 ready passage of the exhaust gases and is preferably provided at the rear edges of the apertures with rearwardly extending tongues 52 which serve to direct the exhaust streams from the apertures toward the tubes 4.

eWhile it is believed that from the fore going description, the nature and advantage of our invention will be readily apparent, we desire to have it understood that we do not limit ourselves to' what is herein may be resorted to when desired as fall within the scope of what is claimed. V -What w'eclaim.as our inventionisz a casing having substantially aligned inlet and outlet ports for exhaust gases, a plurality of tubes extending-longitudinally of the "casing between said ports, and a baflie in B5 advance of said tubes perforations shown and described and that such changes I 1. A combined heater and mufiler including through 'which said gases may flow said tubes.

2'. A combined heater and mufiler including a casin having substantially alignedinlet and out et ports for exhaust gases, a plurality of tubes extending longitudinally of the casing between said ports,and a bafileof conical configuration projecting toward the tubes having perforations through which said gases may -flow directly. into said tubes.

. 3. A combined heater and mufiier including a casing having substantially aligned inlet and outlet ports for exhaust gases, a plurality of tubes extending longitudinall of the casing between said ports and a be e in advance of said tubes having perforations through which said gases 'may flow, said baffle being so constructed and arranged as p to cause the gases passing through said perforations t'o flow in straight lines from said perforations into said tubes. r

4. A 'ombined heater and mufiler including a casin having substantially aligned in let and out et ports for exhaust gases, a plu-v rality of tubes extending longitudinall of the casing between said ports, and a ba e in advance of said tubes having perforations through which said gases may flow, said perforations being provided with' rearwardly extending tongues for directing the flow of gases into said-tubes. v

5. A combined heater and muflier including'a-casing having substantially aligned inlet and outlet ports for exhaust gases, a plurality of tubes extending longitudinally of the casing between said ports, and a bafile of conical configuration projecting toward'the tubes having perforations through, which said gases may flow, said perforations being provided with rearwardly extendingtongues 7 arranged in parallel relation to one another for directing the flow of. gases directly into saidtubes- 6. A heater for automobile bodies comprising a shellhaving a'tubular body, tubes with-1 no in the shell, forward and rear supporting. plates 'for said tubes,- said tubes projecting through said forward plate and being pro vided in advance thereof with cooperating; deflecting means for the exhaust gases and means separatefrom andin advance of said forward plate for deflecting gases toward the deflecting means of said tubes.

In testimony whereof we aflix our signatures. E JAMES-W. KELC'H.

JAMES J. SUNDAY. 

